Distribution Feeder Protection
FM2
FEEDER Protection System
Economical and compact feeder
protection for low voltage feeders
Key Benefits
• Comprehensive low voltage feeder management system
- Integrated feeder protection and process control in a small
package
• Cost effective solution - Low cost modular design
• Small footprint and compact design - With or without
display, fits into standard Power Control Center buckets
• Ease of use - EnerVista™ compatible
• Remote monitoring - via serial communications, Modbus RTU
• Easy installation and integration - Door mount option
• Reduced number of devices - Replaces of bi-metal overload
elements, integrates timers, relays, meters, switches,
indicators
• Integrated trip pushbutton
• Easy to read two line display
Applications
• Feeder protection and management system for low voltage
distribution feeders
• Integrated process and electrical control
• Specifically designed for Power Control Centre applications
Features
Features
Protection and Control
Monitoring & Metering
• Thermal overload protection
• Display phase current, ground current, current unbalance,
voltage, power, energy, etc.
• Trip record and pre-trip values
• Current unbalance
• Ground fault protection
• Open contactor/Welded contactor
• Maintenance information
• Under voltage autoreclose
Communications
• Outputs: 2 fixed, 1 programmable and 1 emergency
shutdown
• Inputs: 6 fixed, 10 programmable
•
•
•
•
RS485 ModBus™ , 1200 - 19,200 bps
Front Panel 11 LEDs, key pad, and 2x20 LCD display
Front Panel control push buttons
Includes EnerVista™ software
EnerVista™ Software
• EnerVista™ software - an industry leading suite of software
tools that simplifies every aspect of working with GE Multilin
devices
• EnerVista™ Integrator providing easy integration of data in
the FM2 into new or existing monitoring and control systems
g
Digital Energy
Multilin
359
FM2 Feeder Protection System
Distribution Feeder Protection
Protection and Control
Contactor/Circuit Breaker Failure
Outputs
The FM2 is available with a variety of
protection and control features. FM2 can
be used for fuse contactors feeders or
feeders with breakers having built in trip
units.
The FM2 monitors the contactor/circuit
breaker while performing close and open
commands. If the contactor does not
change status an ‘open control circuit’ or
‘welded contactor’ alarm is triggered.
Thermal Overload
If circuit breaker doesn’t change status a
‘breaker failed to close’ or ‘breaker failed to
open’ alarm is generated.
The FM2 has two output relays (A and B).
Relay A and Relay B can be controlled
independently for controlling a breaker.
Relay A is used as close contact and
Relay B is used as a trip contact for the
breaker. There is also a programmable
relay available on the FM2, which can be
assigned to any one of the relay functions.
FM2 has an emergency shutdown (ESD)
relay, which can be energized externally by
applying 24VDC.
Thermal overload trip occurs when the
thermal capacity value equals 100%.
Thermal capacity used is calculated
from accumulated I2t value and chosen
overload curves. True RMS current sensing
ensures correct response to the heating
effect of harmonics. One of 3 different I2t
time overcurrent overload curves may be
selected from standard IEC curves.
Additional Alarms
The FM2 has programmable alarms to warn
of a number of abnormal conditions. These
include: contactor inspection, and process
interlock switch open.
Undervoltage Autoreclose
After an overload trip, the thermal
capacity value decreases exponentially
to model the load cooling characteristic.
An overload trip can be reset when the
thermal capacity value decreases to 15%.
The feeder can be automatically reclosed
after a momentary power loss when this
feature is enabled. When the control
voltage drops below the dropout voltage the
contactors are de-energized. The FM2 can
initiate timers to reclose selected feeder
upon the return of supply voltage. It has
one instantaneous and two delayed reclose
settings. If control voltage is restored within
the programmed reclose time, the feeder
will be reclosed immediately. If the control
voltage takes longer to be restored, the
FM2 can be
programmed to attempt a
reclose after a programmed time delay.
Ground Fault
Aging and thermal cycling can cause
cable and equipment insulation to break
down, resulting in ground faults. Ground
faults can be detected by either from the
residual connection of the phase CTs or
from the zero sequence CT. The FM2 can
trigger a trip or an alarm if the ground
fault pickup level is exceeded. A time delay
may be entered for time coordination of
systems with several levels of ground fault
detection.
The FM2 has six fixed control inputs. These
are used for close A and B, open, test status,
and contactor A and B status. The FM2 also
has 10 programmable switch inputs. Each
input can have one of a number of interlock
functions assigned to it. A function can be
assigned to one interlock input.
Monitoring and Metering
The FM2 offers advanced monitoring and
metering which includes:
Metering
The FM2 meters and displays:
• RMS current of each phase
• Ground fault leakage current
• Phase current imbalance (%)
• Power (kW)
• Energy (kWhr)
Functional Block Diagram
BREAKER
Switched Inputs
ANSI Device Numbers & Functions
Device
Number
49/51
50G
79
52
415 - 12000 VOLTS BUS
Function
overload
welded/open contactor
earth fault
undervoltage autoreclose
*see ANSI Standard in catalog for a complete list
• Voltage
Trip Record
When the FM2 issues a trip command a
record is generated which includes the
cause and pre-trip current values.
Statistics and Maintenance
FUSE
The FM2 records statistical data about
relay and feeder operation, allowing the
user to set the interval at which routine
maintenance tasks should be performed.
When the times are exceeded an alarm is
generated. This includes:
PROG. RELAY
CONTACTOR
RELAY A
RELAY B
PHASE/LINE VT
79
ESD RELAY
PHASE CT
49 51
CBCT
50G
LOAD
360
24VDC INPUT
CONTROL INPUTS
PROCESS
PLC
RS485 REMOTE
COMMUNICATE
1200 - 19200 BAUD
FM2
FEEDER PROTECTION SYSTEM
848700A1.DWG
www.GEDigitalEnergy.com
• Contactor inspection: number of contactor/breaker operations after
which contactor contacts must be
inspected for wear
FM2 Feeder Protection System
User Interfaces
single communication channel. The FM2
supports operation at 1200 to 19,200 bps.
A RS232/485 converter module may be
used to connect a personal computer to
the FM2.
The user can communicate with the FM2
through a variety of interfaces:
Display and Control Keys
The panel mount model has a large
user OPEN key which opens feeder
contactor/breaker. The panel mount
model comes with a two-line 40 character
display and additional control keys. The
display and keypad can be used for local
programming, showing information on
alarms and trips, and displaying monitoring
and metering values.
Distribution Feeder Protection
Models
Mounting Configurations
The FM2 can be ordered in either chassis
mount or panel mount with display.
The chassis mount model comes with any
of the option models. Setpoints are loaded
through the RS485 port.
Indicator LEDs
The panel mount with display model may
be ordered with any option model. It is
mounted on the front panel of the PCC
with its two by 20 alphanumeric display,
full keypad, and 11 status LEDs exposed to
the operator for complete local viewing and
setpoint programming. The setpoints can
also be loaded into the relay through the
RS485 communications port.
The panel mount FM2 has nine status
LEDs and has two additional LEDs which
indicate auto mode or manual control
mode.
Communications
The FM2 uses a ModBus® RTU RS485
connection for communication. Up to 32
FM2s can be daisy-chained together on a
Models
Model 712:
• 120V, 50 or 60Hz AC VT input and switch
input voltage rating
Model 722:
• 240V, 50 or 60Hz AC CT input and switch
input voltage rating
The panel mount with display model is the “Top of
the Line” FM2.
EnerVista™ Software
A single PC setup software package is
required to access, configure, and monitor
the FM2 relay. The EnerVista™ FM2 Setup
Software extracts the model number, version,
and configuration parameters from the
connected relay to display only the
relevant data and options for the relay it
is communicating with. This eliminates
having to manually configure the relay
within the software and provides a simple
and easy to use operator user interface.
The FM2 relay is supplied with Windows®
based EnerVista™ FM2 Setup Software.
EnerVista™ software may be run on a PC with
any Windows® based operating system. The
program may be used locally on the RS232
front port or remotely on the RS485 port.
It provides full access to the relay data with
the following features:
• View relay status and actual values
• View/edit settings on-line/off-line
The chassis mount model is the “black box”
version of the FM2. It is mounted inside the power
control center (PCC).
• View event recorder for trouble-shooting
• Configure inputs, outputs and LEDs
through configurable logic
CONVENTIONAL PCC
SUPERVISORY CONTROL SYSTEM
CLOSE
OPEN
CLOSED
OPEN
TRIPPED
MULTIWIRE
CONTROL CABLE
REMOTE CONTROL
Cost Effective PCC Wiring with FM2.
PCC WITH FEEDER MANAGER 2
SUPERVISORY CONTROL SYSTEM
• Relay firmware programming for
upgrades
In addition, all status information such as
target messages and digital input/output
states may be viewed with EnerVista™ FM2
Setup Software.
TWO WIRE
CONTROL
CABLE
PLACED BY
RE
OPEN
CLOSE CONTACTOR
TRIP
LOCAL PCC
REPEAT FOR EACH
CONTACTOR/BREAKER
120/240
VAC
CONTACTOR
OPEN
CONTACTOR
LOAD SENSOR
• Utilize a configurable protection curve
DIGITAL
CONTROL/
MONITOR
RS485
TWISTEDPAIR
TO OTHER
CONTACTORS
IN PCC
FEEDER MANAGER 2
120/240
VAC
RUNNING
STOPPED
TRIPPED
ALARM
FAULT
O/L
E/F
TRIP
FIELD
STOP
AUTO
CLOSE A
SETPOINT
MANUAL
CLOSE B
ACTUAL
RELAY B
PROG RELAY
ESD RELAY
RESET
OPEN
CONTACTOR
RELAY A
MESSAGE
VALUE
STORE
Multilin FM2
Feeder Manager 2
807680A7.cdr
www.GEDigitalEnergy.com
361
FM2 Feeder Protection System
Features
Front View
Distribution Feeder Protection
DISPLAY:
2 line, 40 character illuminated display
communicates all messages in simple English for
easy interpretation by users unfamiliar with unit.
relay indicators:
Relay A: Contactor A energized.
Relay B: Contactor B energized.
prog relay: User programmable relay 1 energized.
esd relay: ESD Relay energized.
control KEYS:
Auto: Selects
operation of close via
communication port.
Manual: Selects manual
operation of feeder using close
key.
CLOSE A: Energize contactor A.
CLOSE B: Energize contactor B.
OPEN: De-energize contactors.
program KEYS:
ACTUAL VALUES: Press to enter actual values mode to display actual feeder
values such as current, earth leakage, voltage, power, energy.
SETPOINTS: Press to enter setpoint mode to alter or examine setpoints.
Store: Save a newly entered setpoint.
RESET: Reset the FM2 after a trip.
Message: Move to the desired setpoint or actual value message.
VALUE: Increment or decrement currently displayed setpoint value.
status INDICATORS:
CLOSED: Contactor is energized and
feeder is closed.
OPEN: Contactor is not energized
and motor is not running.
TRIPPED: Contactor is not energized.
Feeder is open. The FM2 has tripped
the feeder due to a fault. Normally
a cause of trip message will be
displayed.
ALARM: One or more alarm conditions are present. Normally a cause
of alarm message will be displayed.
Fault: An internal fault or abnormal
condition has been detected. The
FM2 may need to be replaced or
serviced.
Rear View
Supply voltage
required to power
theFM2 .
communications
RS485 2 wire serial communication port operates at 1200 – 19,200
bps for remote commands, monitoring and setpoint store. ModBus®
RTU protocol.
Control Power
120/240 VAC supply voltage
selector switch and fuse
access door.
4 relays
•Relay A:
•Relay B:
•User programmable relay (PROG RELAY 1)
• Emergency Shutdown Relay (ESD)
Earth safety and surge.
voltage input
Phase R voltage input
for voltage and power
monitoring.
EARTH FAULT ct input
5 amp or 50:0.025 earth fault input for
residually connected phase CTs or separate
core balance (zero sequence) CT.
phase Ct inputs
3 isolated phase CT inputs that
accept 1 amp or 5 amp CT.
362
switch inputs
Opto-isolated 120 VAC live inputs for various
interlock functions. The interlock inputs are fully
programmable and can be assigned to such
functions as setpoint access, plant interlock,
test, and various others.
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FM2 Feeder Protection System
Typical Wiring
RESIDUAL GROUND CONNECTION
1
5A
2
CT
PHASE Y
3
4
PHASE R CT
B
415V
R
R
Y
5
1A COM 5A
1A
6
7
PHASE Y CT
ISOLATOR
SWITCH
8
COM 5A
9
10
12
11
Y
CT
PHASE B
2
5A
EARTH CT
3
4
5
1A COM 5A
PHASE R CT
1A
6
7
COM 5A
PHASE Y CT
8
9
10
PHASE B CT
12
11
1
50:
0.025 COM
1A COM 5A
2
5A
EARTH CT
CORE BALANCE ( ZERO SEQUENCE )
CT
CT
CT
PHASE R
PHASE Y
PHASE B
CONTACTOR
A
L1
B
1
50:
0.025 COM
1A COM 5A
PHASE B CT
DIRECT CONNECTION
TWO PHASE CT CONNECTION
CT
PHASE R
CT
PHASE B
3
4
5
1A COM 5A
PHASE R CT
CT
EARTH
6
1A
7
COM 5A
PHASE Y CT
8
9
1A COM
Distribution Feeder Protection
CT
PHASE R
PHASE B CT
L1
A
L2
L2
A
L3
L3
LOAD
415V
120V OR 240V
* See Note 4
Vry VT
VT
16
1
2
3
5A
1A
COM
4
INTERLOCK
INPUT 10
INTERLOCK
INPUT 9
43
INTERLOCK
INPUT 8
*
CLOSE
*
44
INTERLOCK
INPUT 7
A
45
INTERLOCK
INPUT 6
46
47
INTERLOCK
INPUT 5
INTERLOCK
INPUT 4
48
INTERLOCK
INPUT 3
49
INTERLOCK
INPUT 2
50
INTERLOCK
INPUT 1
51
OPEN
52
CLOSE A
53
CLOSE B
54
TEST
STATUS NO
CONTACTOR
A STATUS NO
CONTACTOR
B STATUS NO
55
56
57
SWITCH COMMON
58
SWITCH COMMON
CONTROL
VOLTAGE
EARTHING
SAFETY SURGE
13
7
8
5A 1A
9
10
COM 5A
11
12
50:
0.025
COM
14
N
36
37
EARTH CT
38
SERIAL 485 + 39
SERIAL 485
g
RELAY A
L
PHASE B CT
SERIAL EARTH
PROGRAMMABLE SWITCH INPUTS
42
FIXED SWITCH INPUTS
OPEN
6
COM
PHASE Y CT
PHASE R CT
41
5
5A 1A
VT COM
15
RELAY B
RS485
40
Multilin FM2
Feeder Protection System
PROGRAMMABLE RELAY
ESD RELAY
24VDC COIL
COM
NO
COM
NO
1NC 1COM 1NO
34
35
32
33
26 27 28
2NC 2COM 2NO
NC
29
23 24
30
31
COM
NO
+
-
25
21
22
PCC EARTH BUS
CONTACTOR A
848704A1.DWG
L
AC CONTROL VOLTAGE
120/240 VAC
N
NOTES:
1) RELAY CONTACT STATE SHOWN WITH CONTROL
POWER NOT APPLIED.
2) TERMINALS MARKED WITH "
BEFORE FEEDER IS CLOSED
* " MUST BE CONNECTED
3) DIRECT CONNECTION WITH NO CTs CAN BE USED
FOR FEEDER FULL LOAD CURRENT BELOW 10 AMPS
(TYPICALLY LESS THAN 10 HP). NOTE: CT TERMINALS
RATED FOR 600V.
4) 240VAC INPUT CAN BE GIVEN TO FM2 - 722* MODELS ONLY
TRIPPED
FAULT
CONTACTOR B
AUX 1
OPEN
AUX 2
4.35"
(111)
ALARM
CUTOUT
4.13"
(105)
0.13"
(3)
CHASSIS MOUNT CUTOUT
7.50"
(191)
7.24"
(184)
6 x 0.218" Dia. HOLES
(6)
4.07"
(103)
STOPPED
CHASSIS MOUNT SIDE VIEW
PANEL
0.30"
(7.5)
6.90"
(175)
3.47"
(88)
7.10"
(180)
RUNNING
CONTACTOR A
Inches
(mm)
PANEL MOUNT CUTOUT
0.10"
(2.5)
4.17"
(106)
PANEL
3.95"
(100)
3.47"
(88)
1.0"
(25)
0.35"
(9)
PANEL MOUNT SIDE VIEW
7.36"
(187)
1.15"
(29)
2.31"
(59)
PANEL MOUNT FRONT VIEW
1.73"
(44)
Dimensions
BASE PLATE PROFILE
FM2
Feeder Manager 2
8 x 0.078" R
(2)
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807629C5.dwg
363
FM2 Feeder Protection System
FM2 Technical Specifications
PROTECTION
IEC OVERLOAD CURVES
Trip time: Accuracy:
Detection level:
IEC A, IEC B, IEC C
±200 ms up to 10 sec
±2% of trip time over 10 sec
±1% of primary CT amps
ground Fault Trip time
Accuracy:
-0 ms, +50 ms, 0.0 = <50 ms
Distribution Feeder Protection
UNDERVOLTAGE – supply voltage
Undervoltage:
65% of nominal (120 VAC or 240
VAC) immediate reclose for
maximum dip time of 0.1 – 0.5
sec or OFF delay 1 reclose
for maximum dip time of 0.1
- 10.0 sec/unlimited time delay 2
reclose for maximum dip time of
0.5 - 60.0 min/off
Delay reclose range: 0.2 – 300 sec
Delay restart accuracy:±0.2 sec
monitoring
Voltage input/power reading
Conversion:
True RMS, sample time:
12 samples/cycle for 50Hz
10 samples/cycle for 60Hz
Voltage full scale: 1.5 x VT primary
Voltage accuracy: ±2% of VT primary or
±2% of reading (whichever is
greater)
Power accuracy:
±5% of nominal or
±5% of reading (whichever is
greater)
Power range:
-12500kW to +12500kW
Input voltage: Nominal: 120 VAC or 240 V
Max:
150 VAC for 712 model
300 VAC for 722 model
VT burden:
0.01 VA
Phase IMbalance
Range:
Greater than 30% U/B trip, alarm 15%
Accuracy:
±2 percentage points
Trip delay:
5 sec, ±1 sec
Calculation method: If IAV Ž Iflc: | IM - IAV | x 100
IAV
If IAV < Iflc :| IN - IAV | x 100
Iflc
Where:IAV = average phase currents
IM = current in a phase with maximum deviation from IAV
Iflc = motor full load current setting
METERING
PHASE CURRENT INPUTS
Conversion:
True RMS, sample time:
12 samples/cycle for 50Hz
10 samples/cycle for 60Hz
Range:
0.1 – 8 x phase CT primary amps
setpoint
Full scale:
8 x phase CT primary amps
setpoint
Accuracy:
±2% of Phase CT primary amps
setpoint or
±2% of reading, whichever is greater
ground FAULT CURRENT INPUT
Conversion: True RMS, sample time:
12 samples/cycle for 50Hz
10 samples/cycle for 60Hz
Range:
0.1 to 1.0 x Phase CT primary amps setpoint
(5 A secondary CT)
0.5 to 15.0 amps (2000:1 CT)
Full scale:
1.5 x CT primary amps setpoint
(5 A secondary CT)
(15 A (2000:1 CT)
Accuracy:
5 A secondary: ± 2% of full scale
2000:1 CT: ± 0.10A (0.0 to 3.99 A)
± 0.20 A (4.00 to 15.00 A)
POWER SUPPLY
supply voltage
AC nominal:
120 VAC, range 108 – 135 VAC
240 VAC, range 216 – 250 VAC
Frequency:
50/60 Hz
Power consumption: 25 VA (Maximum)
7 VA (Nominal)
*CE units limited to 250 V unless external fuse rated to 300 V
is used.
OUTPUTs
RELAY CONTACTS
FM2 Contactor A & B and
ESD relay
Voltagemake/carrymake/carrybreak
continuous 0.2 sec
30 Vdc
10 A
30 A
10 A
Resistive125 Vdc
10 A
30 A
0.5 A
250 Vdc
10 A
30 A
0.3 A
30 Vdc
10 A
30 A
5A
Inductive125 Vdc
10 A
30 A
0.25 A
(L/R = 7ms)250 Vdc
10 A
30 A
0.15 A
Resistive 120 Vac
10 A
30 A
10 A
250 Vac
10 A
30 A
10 A
Inductive120 Vac
10 A
30 A
10 A
(PF = 0.4) 225 Vac
10 A
30 A
8A
Configuration Contactor A & B – Form A
ESD Relay – form C
Contact Material
Silver alloy (AgCdO)
Max operating voltage
280 VAC, 250 VDC
Minimum permissible load
5 VDC, 100 mA
communications
Type:
RS485 2 wire, half duplex
Baud rate:
1,200 – 19,200 bps
Protocol:
ModBus® RTU
Functions:
Read/write setpoints, read actual values, execute commands, read coil status, read device status, loopback test
environmental
Pollution degree:
2
Overvoltage category:
2
Insulation voltage:
300 V
Operating temperature range:0° C to 60° C
Dust and moisture rating:
NEMA Type 12+12K
FM2 Prog relay 1 output
Voltagemake/carrymake/carrybreak
0.2 sec
Resistive 30 Vdc
5 A
15 A
5A
125 Vdc
5 A
15 A
0.25 A
Inductive30 Vdc
5 A
15 A
2.5 A
(L/R = 7ms)125 Vdc
5 A
15 A
0.1 A
Resistive 120 Vac
5 A
15 A
5A
250 Vac
5 A
15 A
5A
Inductive120 Vac
5 A
15 A
5A
(PF = 0.4) 225 Vac
5 A
15 A
3A
Configuration Aux relay 1 — dual form C
Contact Material Silver alloy (AgCdO)
Max operating voltage
280 VAC, 125 VDC
type tests
UL:
Transients:
Impulse:
RFI:
Static:
INPUTs
CT inputs
Phase CT (1 A)
Phase CT (5 A)
Earth CT (5 A)
SensitiveEarth
Earth
Sensitive
FaultCT
CT(50:0.025)
(50:0.025)
Fault
Hipot:
CT input (A)
1
5
20
5
25
100
5
25
100
0.025
0.1
0.5
Burden
(VA)
(ž)
0.009
0.01
0.2
0.01
3.5
0.01
0.04
0.002
0.9
0.002
16
0.002
0.04
0.002
1.1
0.002
17
0.002
0.07
116
1.19
119
30.5
122
PACKAGING
Max weight:
4 lbs (1.8 kg)
Shipping dimensions:8.3" x 5.625" x 5.8"
(211 mm x 143 mm x 147 mm)
fuse type/rating
0.5 A 250 V
Fast blow, high breaking capacity
Withstand
1 sec x CT 5 sec x CTcontinuous x CT
Phase CT (1 A)
Phase CT (5 A)
Earth CT (5 A)
100
100
100
40
40
40
3
3
3
6 fixed & 10 configurable inputs
optically isolated.
Dry contact
installation
WARNING:
HAZARD may result if the
product is not used for its
intended purpose
Ventilation requirements: None
Cleaning requirements: None
certification
: cULus:
50:0.025 EARTH FAULT Input Withstand
Continuous
150 mA
Maximum
12 A for 3 cycles
50:0.025 input can be driven by a GE Multilin 50:0.025 CT
Digital Inputs
Inputs:
Input Type:
E83849
ANSI/IEEE C37.90.1 oscillatory/
fast risetime transients
IEC 255-22-4 electrical fast
transient/burst requirements
IEC 255-5 5 kV impulse voltage test
IEC 255-22-3 5 v/m with portable
transmitter
IEC 255-22-2 electrostatic
discharge
1500 V, 1 min all input >30 V
IEC 61010-1
E83849 UL listed for USA & Canada
*Specifications subject to change without notice.
Ordering
FM2
* - *
- *
-
*
Base Unit
FM2
Model 712
722
PD
C
Product Family
120V AC VT and Switch input voltage
240V AC VT and Switch input voltage
Panel mount with Display
Chassis mount (Black box)
Visit www.GEMultilin.com/FM2 to:
• View Guideform specifications
• Download the instruction manual
• Review applications notes and support documents
• Buy a FM2 online
• View the FM2 brochure
364
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0306-v3